1. The chemical factory p__________ terrible gas every day.
2. If you b__________ some fresh air, you will feel better.
3. Don't d__________ me now. I'm doing my homework.
4. As we know, n___________ of us likes pollution.
5. You shouldn't throw r___________ here and there.
6. We should do everything we can to protect the e___________.
7. Everyone is s__________ to do something useful.
8. Trees can p__________ the sand from moving towards the rich land.
9. You'd better take a taxi i__________ of walking there. Because it's a long way.
10. We really need to collect w__________ paper and soft drink cans.

1. ______(无论什么)you do, don't miss this exhibition.
2. An unhappy home ______(环境)can affect a child's behavior.
3. The t______ in Kunming is almost the same all year round, so it's called"Spring City".
4. Of all the s ______, I like spring best.
5. — Do you know what the p______ of China is now? 
   — It's over 1. 3 billion.

1. Now it gets warmer and warmer because the p_______ is getting more serious.
2. We should do something for e_______ protection, so that we can protect the earth.
3. It is h_______, although we do something to make it better.
4. We should r________ waste and save energy.
5. This is a s________ question. I can answer it easily.
6. Do you know the d________ between the Internet and the World Wide Web?
7. We should buy p________ made in China.
8. Don’t do h________ to the environment.
9. It's n________ to protect our earth right now.
10. W________ you come here, I’ll invite you to my home.

1. He p_____ not to have heard about it.
2. Don't be s_____.The doctor will be here soon.
3. She had an a_____ yesterday, and she hurt herself.
4. If your mother is busy, you have to take good c_____ of your younger brother.
5. Why don't you listen to my w_____? Now you have had an accident

1.What d          you do last weekend?
2.I  p          playing volleyball last week.    
3.Carol v         his grandparents yesterday morning.     
4.Kate is studying for a Chinese t          now.
5.Is           at home and did some reading yesterday.